Subtraction by Counting Up Worksheet
How to do it in your head (Count up): Start at the smaller number. Jump to the next ten, then the next hundred, then to the bigger number. Add up all the jumps.
NameDateTime takenScore ___ / 40
- 1.517 − 492 =
- 2.56 − 45 =
- 3.1008 − 981 =
- 4.130 − 75 =
- 5.85 − 64 =
- 6.328 − 296 =
- 7.103 − 75 =
- 8.98 − 78 =
- 9.220 − 184 =
- 10.114 − 79 =
- 11.317 − 275 =
- 12.107 − 59 =
- 13.217 − 184 =
- 14.70 − 25 =
- 15.53 − 28 =
- 16.308 − 281 =
- 17.112 − 98 =
- 18.202 − 178 =
- 19.51 − 43 =
- 20.91 − 57 =
- 21.103 − 81 =
- 22.56 − 25 =
- 23.516 − 485 =
- 24.125 − 95 =
- 25.78 − 45 =
- 26.317 − 287 =
- 27.208 − 194 =
- 28.61 − 48 =
- 29.114 − 95 =
- 30.212 − 193 =
- 31.119 − 93 =
- 32.217 − 192 =
- 33.54 − 32 =
- 34.517 − 483 =
- 35.68 − 30 =
- 36.107 − 98 =
- 37.104 − 84 =
- 38.120 − 82 =
- 39.1001 − 982 =
- 40.514 − 494 =
Answer key
- 25
- 11
- 27
- 55
- 21
- 32
- 28
- 20
- 36
- 35
- 42
- 48
- 33
- 45
- 25
- 27
- 14
- 24
- 8
- 34
- 22
- 31
- 31
- 30
- 33
- 30
- 14
- 13
- 19
- 19
- 26
- 25
- 22
- 34
- 38
- 9
- 20
- 38
- 19
- 20
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths